The Tudjuh Archipelago is a large group of islands in northwestern Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

, off of the west and northwest coast of the island of Borneo

Borneo

Borneo is the third largest island in the world and is located north of Java Island, Indonesia, at the geographic centre of Maritime Southeast Asia....

 in the South China Sea

South China Sea

The South China Sea is a marginal sea that is part of the Pacific Ocean, encompassing an area from the Singapore and Malacca Straits to the Strait of Taiwan of around...

. Administratively the islands belong to the Riau Islands province of Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

. The Tudjuh Archipelago consists of four island groups, the Badas Islands

Badas Islands

Badas Islands is a group of islands in the Tudjuh Archipelago in the South China Sea between the Malayasian mainland to the west and the island of Borneo to the east. Administratively it is part of the Riau Islands province of Indonesia....

, the Tambelan Islands

Tambelan archipelago

Tambelan archipelago is a group of islands off the west coast of West Kalimantan, , Indonesia, just north of the equator. Geographically they are part of the Tudjuh Archipelago, and administratively part of the Riau Islands Province...

, the Natuna Islands

Natuna Islands

The Natuna Islands archipelago is located in the Natuna Sea in the larger Tudjuh Archipelago, off the northwest coast of Borneo. The islands are administratively part of the Riau Islands province of Indonesia and are the northernmost non-disputed island group of Indonesia...

, and the Anambas Islands. The southwesternmost extent of the archipelago is 1° 04' S latitude, 105° 10' E longitude.

Further reading

• National Geospatial-intelligence Agency (2005) "Borneo: Northwest Coast and Kepulauan Tudjuh" Sailing directions (enroute): Borneo, Jawa, Sulawesi, and Nusa Tenggara United States National Geospatial-Intelligence Agency